Gosh, I hate this one the most out of all of them. Sure, the amount of people who have 4K TV's are pretty small. Sure, there's not a ton of 4K content out. But this is the next gen Apple TV. It makes little sense for them not to include support. Wouldn't you want this thing to be "future-proof"?
"4K isn't there yet. No need for it. Redundant. Pointless. Waste of resources to include it." Yet Apples releases a Mac with a 5K display. Kinda ironic isn't it?
But now I'm just getting way off-topic lol!
Heh... this is a digression from the real thread, but I wanted to chime in that having a 5K display two feet from your face is a lot more useful than having a 4K display 10 feet from your face. I'm a hi-dpi resolution whore and want all the pixels I can get on my displays that I compute on. Having crisp text when reading a lot is much easier on the eyes. Being able to see details in photos I'm working on is really helpful and nice.
Despite this, I download all my movies in 720p. I literally can not see a difference between 720p and 1080p at the 12+ feet away that my 55" TV sits. I can, however, see a difference in how long it takes to load the video, seek through it, and transcode it.
This would be exacerbated even more at 4K. Sure, it looks great when staring at a screen from six-inches away in a store and one can barely make out the pixels, but when sitting on a couch at the back of the room he/she will not be able to see the difference between 1080p and 2160p on a screen that is less than 100 inches diagonal. (See
http://referencehometheater.com/2013/commentary/4k-calculator/ ). And current mobile processors will have a hell of a time pushing that many pixels smoothly. That is why we don't need a 4K apple TV.
Would you rather have a more pixels you can't even see and a slow and jerky user interface and janky video playback, or would you rather just have a devices that works at the same resolution as the vast, vast majority of current content and have everything work smooth-as-butter?
Don't worry... 4K will come when it is ready. How else will Apple get you to buy the 5th Generation Apple TV?

It won't be too long but I don't think it's today
